lar2par#

class diffsptk.LogAreaRatioToParcorCoefficients(par_order: int)[source]#

See this page for details.

Parameters:

par_orderint >= 0: The order of the PARCOR coefficients, \(M\).

forward(g: Tensor) → Tensor[source]#

Convert LAR to PARCOR.

Parameters:

gTensor [shape=(…, M+1)]: The log area ratio.

Returns:

outTensor [shape=(…, M+1)]: The PARCOR coefficients.

Examples

>>> g = diffsptk.ramp(1, 4) * 0.1
>>> lar2par = diffsptk.LogAreaRatioToParcorCoefficients(3)
>>> k = lar2par(g)
>>> k
tensor([0.1000, 0.0997, 0.1489, 0.1974])

diffsptk.functional.lar2par(g: Tensor) → Tensor[source]#

Convert LAR to PARCOR.

Parameters:

gTensor [shape=(…, M+1)]: The log area ratio.

Returns:

outTensor [shape=(…, M+1)]: The PARCOR coefficients.